Clinical usefulness of macrophage colony-stimulating factor for ovarian cancers: Long-term prognosis after five years

2003 ◽  
Author(s):  
Katsumi Mizutani ◽  
Shoushichi Takeuchi ◽  
Yasuo Ohashi ◽  
Michiaki Yakushiji ◽  
Haruo Nishimura ◽  
...  
Keyword(s):  
Clinical Usefulness ◽  
Colony Stimulating Factor ◽  
Ovarian Cancers ◽  
Macrophage Colony Stimulating Factor ◽  
Macrophage Colony ◽  
Long Term Prognosis ◽  
Stimulating Factor

scholarly journals Differential and synergistic effects of human granulocyte-macrophage colony-stimulating factor and human granulocyte colony-stimulating factor on hematopoiesis in human long-term marrow cultures

Blood ◽  
1991 ◽  
Vol 77 (3) ◽  
pp. 493-499 ◽  
Author(s):  
DE Hogge ◽  
JD Cashman ◽  
RK Humphries ◽  
CJ Eaves
Keyword(s):  
Growth Factors ◽  
Synergistic Effects ◽  
S Phase ◽  
Colony Stimulating Factor ◽  
Gm Csf ◽  
Single Addition ◽  
Macrophage Colony Stimulating Factor ◽  
Macrophage Colony ◽  
Stimulating Factor

Abstract The ability of granulocyte-macrophage colony-stimulating factor (GM- CSF) and G-CSF to influence hematopoiesis in long-term cultures (LTC) of human marrow was studied by cocultivating light density normal human marrow cells with human marrow fibroblast feeders engineered by retroviral infection to constitutively produce one of these growth factors. Feeders producing stable levels of 4 ng/mL GM-CSF or 20 ng/mL G-CSF doubled the output of mature nonadherent cells. The numbers of both colony forming unit-GM (CFU-GM) and erythroid burst forming unit (BFU-E) in the G-CSF LTC were also increased (twofold and fourfold, respectively, after 5 weeks in culture), but this effect was not seen with the GM-CSF feeders. At the time of the weekly half medium change 3H-thymidine suicide assays showed primitive adherent layer progenitors in LTC to be quiescent in both the control and GM-CSF cultures. In contrast, in the G-CSF cultures, a high proportion of primitive progenitors were in S-phase. A single addition of either recombinant GM- CSF or G-CSF to LTC in doses as high as 80 ng/mL and 150 ng/mL, respectively, failed to induce primitive progenitor cycling. However, three sequential daily additions of 150 ng/mL G-CSF did stimulate primitive progenitors to enter S-phase and a single addition of 5 or 12.5 ng/mL of G-CSF together with 10 ng/mL GM-CSF was able to elicit the same effect. Thus, selective elevation of G-CSF in human LTC stimulates proliferation of primitive clonogenic progenitors, which may then proceed through to the terminal stages of granulopoiesis. In contrast, the effects of GM-CSF in this system appear limited to terminally differentiating granulopoietic cells. However, when both GM- CSF and G-CSF are provided together, otherwise biologically inactive doses show strong stimulatory activity. These findings suggest that the production of both of these growth factors by normal stromal cells may contribute to the support and proliferation of hematopoietic cells, not only in LTC, but also in the microenvironment of the marrow in vivo.

scholarly journals Granulocyte-macrophage colony-stimulating factor (GM-CSF) in human long- term bone marrow cultures: endogenous production in the adherent layer and effect of exogenous GM-CSF on granulomonopoiesis

Blood ◽  
1991 ◽  
Vol 78 (5) ◽  
pp. 1230-1236 ◽  
Author(s):  
P Charbord ◽  
E Tamayo ◽  
S Saeland ◽  
V Duvert ◽  
J Poulet ◽  
...  
Keyword(s):  
Stromal Cells ◽  
Culture Medium ◽  
Neutralizing Antibody ◽  
Colony Stimulating Factor ◽  
Gm Csf ◽  
Bone Marrow Cultures ◽  
Macrophage Colony Stimulating Factor ◽  
Macrophage Colony ◽  
Stimulating Factor

Abstract This study was designed to assess the presence of endogenous granulocyte-macrophage colony-stimulating factor (GM-CSF) within adherent layers of human Dexter-type cultures and to investigate the effect on granulomonopoiesis of adding exogenous GM-CSF to the culture medium. The presence of GM-CSF was demonstrated using a bioassay, in which adherent layers from normal bone marrows gave rise to endogenous granulocyte-macrophage colony-forming units (CFU-GM) that were specifically inhibited by increasing amounts of an anti-GM-CSF neutralizing antibody. Using an immunoassay, the estimated amounts of GM-CSF were less than or equal to 40 pg per flask in adherent layers, while remaining undetectable in supernatants. The addition of 10 ng or purified recombinant GM-CSF per milliliter of culture medium increased slightly the CFU-GM output over a 5-week culture period. The addition of 50 ng/mL decreased significantly the CFU-GM output after 5 weeks of culture. This decrease was associated with major modifications of the adherent layer cell composition. Large round or ovoid macrophages were generated at the expense of the interdigitated and elongated stromal cells and the extracellular fibronectin network was no longer observed. These studies suggest that GM-CSF production by accessory cells (stromal cells and/or monocytes) is almost equal to its consumption by hematopoietic cells, a situation similar to that found in long-term cultures of murine marrows. They also show that the maintenance of granulomonopoiesis is decreased by adding more than 10 ng/mL of exogenous GM-CSF to the culture medium, which is related to the induction of adherent macrophages, the disappearance of the major smooth-muscle-like stromal cell component of the adherent layer, and that of the fibronectin extracellular matrix.

scholarly journals Inhibition of hematopoiesis in normal human long-term marrow cultures treated with recombinant human macrophage colony-stimulating factor

Blood ◽  
1991 ◽  
Vol 78 (3) ◽  
pp. 651-657 ◽  
Author(s):  
H Mayani ◽  
LJ Guilbert ◽  
SC Clark ◽  
A Janowska-Wieczorek
Keyword(s):  
Inhibitory Activity ◽  
Inhibitory Effect ◽  
Human Macrophage ◽  
Colony Stimulating Factor ◽  
Macrophage Colony Stimulating Factor ◽  
Macrophage Colony ◽  
Stimulating Factor ◽  
Stromal Layer ◽  
Marrow Cultures

Abstract The effects of recombinant human macrophage colony-stimulating factor (rhCSF-1) in long-term marrow cultures (LTMC) established from normal bone marrow cells were examined. When added during the first 3 weeks of culture (every second day, at 15 ng/mL), rhCSF-1 strongly inhibited the growth of all hematopoietic progenitors analyzed (colony-forming unit- MIX [CFU-MIX], CFU-granulocyte macrophage [CFU-GM], CFU-M, CFU-G, burst- forming unit-erythroid). Paralleling the inhibition of progenitors was the complete loss of adipocytes from the stromal layer of rhCSF-1- treated cultures. The inhibitory effect of rhCSF-1 correlated in all instances with the accumulation in the supernatants of these cultures of an activity (different from CSF-1) that inhibited colony formation in semisolid cultures. When addition of rhCSF-1 was delayed 3 weeks, its inhibitory effects were significantly reduced, which correlated with reduced inhibitory activity detected in the supernatants. Analysis of CSF-1 concentration by radioreceptor assay confirmed that added rhCSF-1 increased culture CSF-1 levels and showed that the decreased inhibition observed when rhCSF-1 is added later in culture was not due to decreased CSF-1 levels at that point. In contrast, the ability of rhCSF-1 to inhibit hematopoiesis and accumulate inhibitory activity in LTMC correlated with its rate of utilization, much higher in the first 2 weeks of culture, when the stromal layer was being established, than later. These observations document the inhibitory effect of rhCSF-1 on all aspects of hematopoiesis conducted in cultures that simulate the hematopoietic microenvironment, demonstrate the importance of accessory/stromal cells in mediating the effects of rhCSF-1 in LTMC, and point to an inhibitory activity as the mediating agent.

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